Two weeks ago I failed to catch a Periaeschna species in Yen Bai Province, although I did take some pictures and from that it appears to be P. magdalena. See the concerned entry. Luckily, when working the streams around Nam Bung on May 11, I bumped into several Aeshnids and was able to catch one and take pictures of a female. In hand there seemed little doubt that at these were P. magdalena, although they appear more yellow and less green than the specimen a week earlier and had differently colored eyes. However, by now (mid-June) I have caught several other P. magdalena, in Ba Vi and Xuan Son. They invariably display all dark legs, dark blue eyes, much darker thorax pattern contrasting with the light stripes, differently shaped antehumerals and differently shaped appendages. In fact, they are very different insects. I handed over my male specimen of this species to Karube, so I cannot check it now, but this must be a different Periaeschna species.
|Male Periaeschna sp., a quite beautiful Aeshnid|
|Thorax and head in close-up|
|The female hanging in a bush at a safe distance|
|The appendages, close to Asahina (1981), but in fact slightly different|
|And likewise, in lateral view|